I want to create 开发者_JAVA百科a vibration but not of the normal length
It can't be done with the official SDK. The only way to trigger vibration is using a call to the following function, which unfortunately does not take any other parameters.
AudioServicesPlayAlertSound(kSystemSoundID_Vibrate)
Maybe there's a way to do it for jailbroken iPhones, but no that I'm aware of.
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